upgrade the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components); "the power plant received a new upgrade"
reservation -
a statement that limits or restricts some claim; "he recommended her without any reservations"
fine print,
small print the part of a contract that contains reservations and qualifications that are often printed in small type; "don't sign a contract without reading the fine print"
reservation -
a district that is reserved for particular purpose
reservation A tract of land set apart by the US government for the use of a Native American people.
reservation An arrangement made in advance to have something at a certain time where only a limited number are available, such as a seat in a transport, a table at a restaurant or a room in a hotel.